Improvement in flood-gates



nterl ,t-atea aient (twin/r.

THOMAS Hyannnn, or' DUNDERMICHIGAN.

.Letters PatenteNa. 107,159, dated September 6, 1870.

To whomvit may concern The nat-ure of this invention relates to animprovedconstruction-of Hood-gates, and consists in the peculiarconstruction of the gate and its frame, the former being sectional, andthe latter hinged to the crossbeam, and the whole so arranged that, in high water a single section, or as many `more as may be neces'- sary,will lift to permit the passage of oating sticks and other obstructions;

Awhole may be swung up clear of the water, so as not to be frozen in,which would render itliable to be carried away when the ice broke up. 1nthe drawing, which isa perspective view of the down-stream side of my`fiood-gate- A represents mud-siils, secured in the bottom of brook,near its sides, on which are erected the posts B,

connected at theftop by across-beam, O..

D is the gate-frame, composed of two verticalv 'pieces of timberconnected at the top by a cross-beam;

from the upper corner of the downstream side of -the beam C project the'pintles d, to which the gate-frame is ypivoted by an iron rod, b,passing through all.

E are the sections of the gate, in the shape of planks, either hinged tothe bar b or bored transversely through their upper ends, so that thebar may pass through them in the manner shown.

useful Improvement ina" in low water the sections are secured to theframe, and, `on approach of winter, the

D' are side bars, one of which issecuredon the down-stream facevof eachof the vertical bars of the gate-frame.

AF is a transverse bar moving np and down in thc slide-bars.

c are pins passing through the braces of thegposts B, and, engaging withthe gate-frame, secure the lat- 1er in its vert-ical position; in thelatter position, .and in low water, the bar F is moved down to thebottomof the slides, when the gate sections and frame' forin essentiallya'solid strluiture; during high water or flood, thebar F is raised upAin the slides above the tops of the sections., which give readily to aoating ohstruction'and permit it to pass. On the approach ot' frost-yweather, the bar F- 'is moved. up above the sections andthe pins cwithdrawn from the gateframe, which is swung up ou'its pivot to ahorizontal position, resting on the cross-beam C, as sh'own by thedotted lines, while the sections are/thrown up to rest 'on the cross-barat the top of the frame, as shown in like inan'n cr;by this means, thegate will not'be frozen in during the winter, to be carried away whenthe ice breaks up in the spring.

That Iclaim as my invention, and desire to secure byLetters Patent, is

The construction and arrangement of the sills A, posts B, cross-beam C,and gate-trame D, pivoted thereto by the bar b, said bar having alsopivoted on it the' sections E, the slides D', and bar F,`as and for thepurpose set forth.

THOMAS H. BREED. Y

Witnesses FREDERICK EBERTs, H. WATLING, SAM. J. SPRAY.

